Actions: Update dorny/paths-filter version

Author: simmsa

.github/workflows/main.yml

@@ -55,7 +55,7 @@ jobs:
 
       - name: Check for changes in wave/io/hindcast
         id: changes
-        uses: dorny/paths-filter@v3
+        uses: dorny/paths-filter@v4
         with:
           filters: |
             wave_io_hindcast: